Ben + Anyone
The memorial had been as hard as Ben thought it would be. Standing there beside Bryn and Rose, he had been unable to look away from Bill. Louis' father. He wanted to go over, say something, but what was there to say besides 'Sorry I got your son killed'.
Every time he closed his eyes, he saw it happen again. He'd been right there, keeping control of the dragon and killing Dementors when he could. The hex had come out of no where, straight at him. He'd swerved, trying to get out of the way, but before he could Louis was there. The curse had taken him, killed him right before Ben's eyes, and there had been nothing he could do to stop it.
That was something he hadn't told anyone. That Louis had taken a curse meant for Ben. He couldn't even find the words to admit to himself, let alone anyone else. And how could he look any of the Weasleys in the eyes again, when he knew that if it wasn't for him, Louis would still be alive.